stellarium VS HYG-Database

They're the Plieades. For future reference you can check on what's in the sky with software like Stellarium.

Btw, seems it is gone because the account was deleted https://github.com/Stellarium/stellarium/discussions/3277 back in June of 2019

We have been experiencing distress and perplexity of nations upon the earth unlike anything in modern history. There have been record hurricanes, cyclones, typhoons, and flooding globally which appears to relate to “the sea and the waves roaring” and according to research using the Stellarium Astronomy Software, this was a one time alignment on September 23, 2017 involving the sun, moon, and stars that accurately matches the reading of Revelation 12:1-2 word-for-word, the last book of the Bible foretelling the end of the age.

Stellarium - Planning out targets and just seeing what's up in the sky on any given night

I did a bit of poking around using Stellarium and found two stars that I thought were admirable candidates, and I wasn't sure why Nell and Ruggles didn't think so: Phecta and Megrez, Gamma and Delta Ursae Majoris. These are the two stars that make the left side of the 'scoop' of the big dipper. According to Stellarium they were at their closest to being in a north-south alignment in the year -2586, that is 2587 BCE, with right ascensions differing by just 1.28 s (0.00036°). They were 15° and 20° from the pole at the time.

But if you need an API i think stellarium.org has an one.

If I wanted to build an app like Stellarium, displaying a 3D model, but not requiring fast animation, not a game, more visualization, what libraries should I be considering for the display/UI portion of this program?

Hey there, you might wanna look at this: (The most recent and bigger 2.5M star collection comprises of : Augmented Tycho, Hipparcos, Yale, Gliese, but has no spectral information, just mag/absmag) https://github.com/astronexus/HYG-Database/tree/master/hyg

I don't use an API here. I have a reference data from github.

The GAIA dataset has too many errors to be used for that purpose, try HYG instead: https://github.com/astronexus/HYG-Database

This doesn't really answer your question, but https://github.com/astronexus/HYG-Database is a shortcut to get the actual values although I believe these are in equatorial coordinates (ICRF, the International Coordinate Reference Frame), not ecliptic coordinates.

We do try to identify the spectral type of the stars. For example, the HYG database https://www.astronexus.com/hyg has the spectral type for 120,000 stars. If a star is really a Dyson swarm, I wonder if the computer incorrectly classify it as a red giant.

I know it because I was recently making a game in Unity where I grabbed a csv full of star data here for anyone interested to create a realistic star field (position, magnitude, colour, star names) using real world data and the Unity Particle system.